(BTA, Sega, Standart, Europe.bg, Oil & Gas Eurasia - 01/12/10, Reuters, BTA, Πρακτορείο Ειδήσεων Σόφιας, Dnevnik.bg, Mediapool, The Banker, Publics.bg, ANSA, Xinhua, Επίσημος δικτυακός τόπος Βουλγαρικής κυβέρνησης - 30/11/10)
(BTA, Sega, Standart, Europe.bg, Oil & Gas Eurasia - 01/12/10; Reuters, BTA, Agenţia de ştiri Sofia, Dnevnik.bg, Mediapool, The Banker, Publics.bg, ANSA, Xinhua, Pagina oficială de internet a Guvernului Bulgariei - 30/11/10)